BMW Internal Engine Parts for BMW 3 Series E30 (1984-1991)

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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BMW S14 4 Cyl. 284-Degree - Camshaft
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Schrick - Corporate Logo
T#:431
Part#: TMS431
Special Order: No Guaranteed ETA
$ 1,503.99 USD
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$ 1,503.99 USD
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Schrick has been dedicated to engine performance through the development of only the highest-quality camshafts for more than 40 years. They've created a bond with BMW enthusiasts nearly the entire time, offering options for both the street and track using top materials for strength and accuracy. Schrick has grown into a technology center offering one of the most advanced locations for engine testing and manufacturing. These are the same cams used by many high-end German tuners who are achieving sizeable gains with the S14 engine. For the power-hungry, these cams are a great way to achieve a linear increase in horsepower from mid-range, up to redline. Duration Intake - 284 Duration Intake @ 1mm - 253 Duration Exhaust - 284 Duration Exhaust @ 1mm - 253 Intake Peak Timing - 106 Exhaust Peak Timing - 106 Cam Lobe Lift Intake - 11, 5 Cam Lobe Lift Exhaust - 11, 5 Valve Lift w/o Valve Clearance Intake - 11, 5 Valve Lift w/o Valve Clearance Exhaust - 11, 5 Valve Clearance Intake - 0, 25 Valve Clearance Exhaust - 0,3
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Schrick Camshaft - E30 325i, E34 525 (M20) 288 degree
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Schrick - Corporate Logo
T#:389586
Part#: 338236TCKRM3LJXJ
Ships on Oct 22, 2026
$ 490.00 USD
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$ 490.00 USD
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S14 EVO3 2.5L Crankshaft without Bearings
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Genuine European BMW - Corporate Logo
T#:393127
Part#: 11211315485
In Stock
Sale - Save 5% $ 3,449.99

This product was last offered at the strikethrough price on
06-25-2026

$ 3,277.42 USD
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$ 3,449.99

This product was last offered at the strikethrough price on
06-25-2026

$ 3,277.42 USD
S14 EVO3 2.5L Crankshaft without Bearings

Kolbenschmidt Rod Bearing Set of 8 - (-0.25mm Undersize) - 1124128455...
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Kolbenschmidt - Corporate Logo
T#:28271149
Part#: 11241284552
Special Order: No Guaranteed ETA
$ 44.99 USD
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Kolbenschmidt (KS) rod bearing sets are engineered to deliver exceptional performance and reliability, making them an ideal choice for demanding automotive applications. These sets are designed to provide maximum load-bearing capacity, ensuring optimal engine function under heavy loads and high-stress conditions. The use of advanced materials and coatings contributes to anti-seize properties, reducing friction and wear for extended durability.

Manufactured with precision, KS rod bearing sets feature aluminum-tin sliding material combined with an innovative aluminum-zinc-bismuth alloy. This alloy, with bismuth replacing lead, enhances performance while meeting modern environmental standards. The manufacturing process involves casting aluminum strips on-site, followed by carefully coordinated rolling and annealing processes to create composite materials with superior strength and reliability.

One of the standout features of KS rod bearing sets is their innovative coatings, which play a crucial role in ensuring optimal running-in behavior and long-term continuous operation with minimal wear. These coatings range from galvanic films applied electrochemically to electro-physically deposited sputter layers in a high vacuum, as well as synthetic anti-friction coatings. This comprehensive approach to surface treatments enhances performance and longevity, making KS rod bearing sets a top choice for OEM applications.

Features:

Original Equipment Manufacturer (OEM) quality Maximum Load-Bearing Capacity for heavy-duty use Low Wear and Friction for extended service life Advanced Surface Coatings for optimal performance and durability Upgrade your engine's reliability and performance with Kolbenschmidt rod bearing sets, trusted by automotive enthusiasts and professionals worldwide.

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Standard Thrust Bearing - Priced Each
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Kolbenschmidt - Corporate Logo
T#:594829
Part#: 11210666100
Back Ordered
$ 79.99

This product was last offered at the strikethrough price on
05-07-2026

$ 77.99 USD
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$ 77.99 USD
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TRW Exhaust Valve - E30, E34
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TRW - Corporate Logo
T#:280
Part#: 11341309487
Back Ordered
71% off MSRP $ 177.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 51.99 USD
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71% off MSRP
$ 177.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 51.99 USD
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The exhaust valves in your vehicle allow the exhaust port to be sealed during the combustion process, so that the engine can run at top efficiency. If the timing belt or lifter breaks, this can cause the piston to come in contact with the valve and bend or break it, causing an improper seal. This will cause a rough idle, misfires, and a check engine light condition. Be sure to replace your bent or broken valve today and keep your engine running strong.
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CP Forged Piston Set BMW M20 B25 Std.
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5150 Autosport - Corporate Logo
T#:26205089
Part#: CP-FPS-M20-B25
Back Ordered
$ 1,349.99 USD
Free Shipping on orders $49 and up
CP-Carrillo represents the highest quality pistons on the market, engineered for maximum power and durability. Utilizing high-strength, lightweight materials and advanced engineering, this BMW M20B25 piston set features: Lightweight Design: CP-Carrillo pistons are made from high-strength, lightweight materials, such as forged aluminum alloy. Reduced piston weight contributes to improved engine responsiveness and acceleration. Advanced Engineering: CP-Carrillo engineers use state-of-the-art technology and engineering techniques to manufacture pistons that offer optimized combustion, improved fuel efficiency, and increased power output. CP-Carrillo pistons are the best choice for any M20 engine and application, from street bully to all-out track car, and are engineered by one of the most respected names in motorsport to improve performance and reliability. Piston Sets Include: - Pistons - Rings - Pins - Locks - Spec Sheet
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BMW M10 4 Cyl. 292-Degree - Clockwise Distributor - Camshaft ...
For Vehicles With Clockwise Distributor
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For Vehicles With Clockwise Distributor Only
Schrick - Corporate Logo
T#:583620
Part#: 000201920-01
Special Order: No Guaranteed ETA
$ 1,135.99 USD
Free Shipping
$ 1,135.99 USD
Free Shipping
Schrick has been dedicated to engine performance through the development of only the highest-quality camshafts for more than 40 years. They've created a bond with BMW enthusiasts nearly the entire time, offering options for both the street and track using top materials for strength and accuracy. Schrick has grown into a technology center offering one of the most advanced locations for engine testing and manufacturing. These are the same cams used by many high-end German tuners who are achieving sizeable gains with the M10 engine. For the power-hungry, these cams are a great way to achieve a linear increase in horsepower from mid-range, up to redline. Duration Intake - 292 Duration Intake @ 1mm - 251 Duration Exhaust - 292 Duration Exhaust @ 1mm - 251 Intake Peak Timing - 110 Exhaust Peak Timing - 110 Cam Lobe Lift Intake - 7, 6 Cam Lobe Lift Exhaust - 7, 6 Valve Lift w/o Valve Clearance Intake - 10 Valve Lift w/o Valve Clearance Exhaust - 10 Valve Clearance Intake - 0, 2 Valve Clearance Exhaust - 0,2
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Bearing Shell Yellow - E28, E30, E34, E36, E39, E46, E53, E60, E83, Z...
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Genuine BMW - Corporate Logo
T#:32464
Part#: 11211717782
In Stock
Sale - Save 72% $ 32.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.34 USD
Free Shipping on orders $49 and up
Sale - Save 72%
$ 32.99

This product was last offered at the strikethrough price on
05-02-2026

$ 9.34 USD
Free Shipping on orders $49 and up


Genuine BMW Bearing Shell Yellow - 59,50Mm(+0,50)
This item fits the following BMW Chassis:
E36 M3,E30,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4

Fits BMW Engines including:
M20,M42,M44,M50,M52,M54,M56,S50,S52

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Intake Valve - Priced Each
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TRW - Corporate Logo
T#:594029
Part#: 11341254625
In Stock
$ 15.78

This product was last offered at the strikethrough price on
05-03-2026

$ 14.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 15.78

This product was last offered at the strikethrough price on
05-03-2026

$ 14.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Got a bent valve? Replace yours today with this genuine replacement.
Genuine BMW Dowel - 11121726241
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Genuine BMW - Corporate Logo
T#:31215
Part#: 11121726241
In Stock
13% off MSRP $ 2.11

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1.83 USD
Free Shipping on orders $49 and up
13% off MSRP
$ 2.11

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1.83 USD
Free Shipping on orders $49 and up


Genuine BMW Dowel - D=12,5Mm
This item fits the following BMW Chassis:
E39 M5,E60 M5,E63 M6,E82 1M Coupe,E53 48IS,E30,E34,E36,E38,E39,E53 X5 X5,E63,E65,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4 X4,F30,F31,F32,F33,F34,F36

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Genuine BMW Connecting Rod Bolt 11241713342
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Genuine BMW - Corporate Logo
T#:19119
Part#: 11241713342
In Stock
$ 10.28

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 10.27 USD
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$ 10.27 USD
Free Shipping on orders $49 and up


Genuine BMW Connecting Rod Bolt - L=53Mm
This item fits the following BMW Chassis:
E30,E34,E36,E38

Fits BMW Engines including:
M20,M42,M50,M70,M73,M73N,S70

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Genuine BMW Cylinder Head Hose Connector
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Genuine BMW - Corporate Logo
T#:31265
Part#: 11121740396
Ships in 4 Business Days
$ 15.99 USD
Free Shipping on orders $49 and up


Genuine BMW Connector - M12

This item fits the following BMW Chassis:
E36 M3,E30,E34,E36,E39

Fits BMW Engines including:
M10,M20,M30,M50,M52,S50,S52

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Valve collet - priced each
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Genuine BMW - Corporate Logo
T#:360642
Part#: 11341307136
In Stock
$ 1.99 USD
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Single Groove Valve Keeper 6mm - Priced Each
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Supertech - Corporate Logo
T#:3268708
Part#: KPR-6S-7
In Stock
$ 5.99

This product was last offered at the strikethrough price on
03-04-2026

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
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Two required per valve, for use with certain supertech valves 6.0mm single groove

Osvat Intake Valve - E28, E30, E34
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Osvat - Corporate Logo
T#:1196099
Part#: 11341706631
In Stock
$ 12.99

This product was last offered at the strikethrough price on
06-22-2026

$ 10.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 12.99

This product was last offered at the strikethrough price on
06-22-2026

$ 10.99 USD
Limited Qty Sale
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Standard replacement intake valve

Rocker Arm Shaft Plug - Priced Each
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Victor Reinz - Corporate Logo
T#:593898
Part#: 11331264519
Ships in 1 day
$ 3.99

This product was last offered at the strikethrough price on
05-07-2026

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
Free Shipping on orders $49 and up
If you drive a European vehicle, chances are high your vehicle came equipped with one or more Victor Reinz gaskets. Choose OE quality VR gaskets and seals and do the job right the first time.
Rocker Shaft Plug - E30 325e 325i, E34 525i - M20 engine
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Elring - Corporate Logo
T#:14515
Part#: 11331264519
In Stock
$ 2.03 USD
Free Shipping on orders $49 and up
Rocker shaft blind plug for M20 engine. 4 per engine required.

If you drive a European vehicle, chances are high your vehicle came equipped with one or more Victor Reinz gaskets. Choose OE quality VR gaskets and seals and do the job right the first time.

This item fits the following BMWs:
1982-1988 E28 BMW 528e
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1989-1990 E34 BMW 525i
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Rein Exhaust Valve - Sold Each - E28, E30, E34
For vehicles with production date from 12/1986
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:584424
Part#: 11341708896
In Stock
Sale - Save 9% $ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD
Free Shipping on orders $49 and up
Sale - Save 9%
$ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD
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Replace your worn valves
Connecting Rod Bushing - Set Of 6
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Kolbenschmidt - Corporate Logo
T#:4744851
Part#: 11241278209
Ships in 6 Business Days
$ 18.99 USD
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Recommended to be replaced anytime engine is being overhauled.

TRW Intake Valve - E30, E34, E36
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TRW - Corporate Logo
T#:19230
Part#: 11341722908
In Stock
$ 23.99

This product was last offered at the strikethrough price on
06-01-2026

$ 19.99 USD
Limited Qty Sale
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$ 23.99

This product was last offered at the strikethrough price on
06-01-2026

$ 19.99 USD
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INTAKE VALVE 11341722908 Manufactured by TRW


Victor Reinz O-Ring - Distributor Drive And Cam Cover - E24, E28, E30...
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Victor Reinz - Corporate Logo
T#:597166
Part#: 12111252257
Ships in 1 Business Day
$ 3.99

This product was last offered at the strikethrough price on
05-07-2026

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
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Seals the cover plate to the cylinder head
Febi Eccentric Bolt - E12, E21, E23, E24, E28, E3, E30, E32, E34, E9 ...
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We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382364
Part#: 11331744355
In Stock
$ 2.99 USD
Free Shipping on orders $49 and up
Used on rocker arm eccentric
Plastigage Set
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CTA Tools - Corporate Logo
T#:640925
Part#: CTA2450
In Stock
$ 9.27 USD
Free Shipping on orders $49 and up

Plastigage Set is an essential tool for accurately measuring the clearances of engine rod and main bearings without the need for expensive micrometers. This set is ideal for ensuring proper engine assembly by helping you choose the correct size replacement bearing inserts. Designed to cover all automotive engines, the Plastigage Set provides precise measurements to maintain optimal engine performance.

  • Accurate Measurements: Measures clearances of engine rod and main bearings, ensuring proper fitment.
  • Cost-Effective: Eliminates the need for expensive micrometers, offering a budget-friendly solution.
  • Universal Application: Suitable for all automotive engines, making it versatile for various applications.
  • Complete Set: Includes sizes .001" - .003" (green) and .002" - .006" (red) to cover a wide range of measurements.
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Cylinder Head Bolt Washer
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MTC - Corporate Logo
T#:26538363
Part#: 11127550856
In Stock
$ 2.50 USD
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Genuine BMW Washer - 11127550856
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Genuine BMW - Corporate Logo
T#:31410
Part#: 11127550856
In Stock
$ 3.99 USD
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Genuine BMW Washer
This item fits the following BMW Chassis:
E36 M3,E39 M5,E60 M5,E63 M6,E53 48IS,E30,E34,E36,E38,E39,E46,E53 X5,E63,E65,E70 X5 X5,E83 X3,E85 Z4,E90,E92,E93

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Genuine BMW Engine Connecting Rod Bolt - BMW
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Genuine BMW - Corporate Logo
T#:12938
Part#: 11247589671
In Stock
$ 8.99 USD
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$ 8.99 USD
Free Shipping on orders $49 and up
This bolt is located in the connecting rod. Two required per rod. Measurements: M9x47mm

Genuine BMW Rocker Shaft Spring - E10 E12 E21 E23 E24 E28 E30 E32 E34...
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Genuine BMW - Corporate Logo
T#:6774
Part#: 11330634125
In Stock
$ 3.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 3.99

This product was last offered at the strikethrough price on
01-28-2026

$ 2.99 USD
Limited Qty Sale
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Genuine BMW Compression Spring -

This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M10,M30


ARP Ultra-Torque Fastener Assembly Lubricant (Select Your Size) ...
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ARP - Corporate Logo
T#:338571
Part#: TMS1733
In Stock
Starting at $ 1.99 USD
Free Shipping on orders $49 and up
Starting at $ 1.99 USD
Free Shipping on orders $49 and up
If you are using a premium fastener, such as the ARP brand rod bolts, head bolts, or main bolts, then you will want this assembly lube. Made to be used to precisely duplicate all ARP fastener preload specifications.
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OEM Rein Rocker Arm Shaft Plug - E28 E30 E34
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:583592
Part#: 11331264519
In Stock at Vendor
$ 6.11 USD
Free Shipping on orders $49 and up
This is an OEM Rein replacement rocker arm shaft plug, also referred to by BMW as a Blind Plug. This plug connects to the end of the rocker arm shafts. 4 required per vehicle. Replace your old plugs to keep everything properly sealed.
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TRW Exhaust Valve (38 mm) (8 mm Stem) - E10 E21 E30
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TRW - Corporate Logo
T#:19086
Part#: 11341251063
In Stock at Vendor
$ 27.79 USD
Free Shipping on orders $49 and up


EXHAUST VALVE 11341251063 Manufactured by TRW

This item fits the following BMWs:

BMW 2002 - 2002, 2002tii
BMW 3 Series - 318i, 320i

--.
Genuine BMW Valve Spring - Outer (30.2 mm Diameter) - E28 E30 E34 ...
For vehicles with production date from 09/1985
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:6788
Part#: 11341706583
In Stock at Vendor
$ 26.99 USD
Free Shipping on orders $49 and up
$ 26.99 USD
Free Shipping on orders $49 and up


Genuine BMW Valve Spring - D=30,2mm
This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M20


CP-Carrillo Connecting Rod Set M20 Pro-Xtreme
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For Vehicles With 135mm Connecting Rods
5150 Autosport - Corporate Logo
T#:26205099
Part#: CAR-CRS-M20-XT
Ships in 3 Business Days
$ 2,099.99 USD
Free Shipping on orders $49 and up
The 5150 AutoSport Pro-Xtreme Connecting Rods, made by CP-Carrillo, are designed to handle extreme horsepower and high RPM applications for BMW M20 engines with 135 mm Rods. Constructed from high-strength, aircraft-grade steel, these connecting rods are engineered to withstand the forces generated by high-powered engines. The Pro-Xtreme design is specifically tailored to handle up to 2000 horsepower, making these rods suitable for high-performance turbo/drag racing or street/strip applications. They are also designed to handle high engine speeds of up to 9500 RPM, which is necessary for achieving maximum power output. Each connecting rod is precisely fabricated to meet the demands of high-performance engines using advanced manufacturing techniques such as computer-aided design (CAD) and finite element analysis (FEA). The Pro-Xtreme Connecting Rods are designed to be durable, reliable, and capable of handling the extreme stresses and forces generated by high-horsepower and high-rpm engines. Please note that these 135 mm connecting rods are designed to fit M20 135mm Rod engines. They will NOT fit 130 mm Rod Engines.
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Glyco Connecting Rod Bushing
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Glyco - Corporate Logo
T#:374292
Part#: 11241278209
Ships in 1 Business Day
$ 6.11 USD
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Press fit into small journal of connecting rod
Osvat Exhaust Valve - Sold Each - E28, E30, E34
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Osvat - Corporate Logo
T#:1196100
Part#: 11341708896
In Stock at Vendor
$ 33.82 USD
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Replace your worn valves
Timing Chain - Single Row
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Iwis - Corporate Logo
T#:578660
Part#: 11311716987
In Stock at Vendor
$ 62.99

This product was last offered at the strikethrough price on
05-07-2026

$ 60.99 USD
Free Shipping on orders $49 and up
$ 60.99 USD
Free Shipping on orders $49 and up
The timing chain in any vehicle can begin to stretch and rattle over time. This is a common issue, and though BMW says it is a lifetime part, most enthusiasts decide to change them. If you need only the timing chain instead of a kit, ECS Tuning has your replacement. This is a direct fit replacement for any broken or stretched chain. A great replacement to a damaged chain or one that may have been misplaced out of a timing belt kit.
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CP Forged Piston Set - M20B27 - 84.5mm Bore, 8.5:1 CR
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5150 Autosport - Corporate Logo
T#:26271772
Part#: CP-FPS-M20-B275
Ships in 3 Business Days
$ 1,396.99 USD
Free Shipping on orders $49 and up
CP-Carrillo represents the highest quality pistons on the market, engineered for maximum power and durability. Utilizing high-strength, lightweight materials and advanced engineering, this BMW M20B27 piston set features: Lightweight Design: CP-Carrillo pistons are made from high-strength, lightweight materials, such as forged aluminum alloy. Reduced piston weight contributes to improved engine responsiveness and acceleration. Advanced Engineering: CP-Carrillo engineers use state-of-the-art technology and engineering techniques to manufacture pistons that offer optimized combustion, improved fuel efficiency, and increased power output. CP-Carrillo pistons are the best choice for any M20 engine and application, from street bully to all-out track car, and are engineered by one of the most respected names in motorsport to improve performance and reliability. Piston Sets Include: - Pistons - Rings - Pins - Locks - Spec Sheet
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Valve Guide - Intake/Exhaust 1st Replacement (13.05 X 7.00 Mm) ...
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Canyon Engine - Corporate Logo
T#:596716
Part#: 11121280523
In Stock at Vendor
$ 12.29 USD
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Replacement Valve Guide from Canyon Engine
Genuine BMW Valve Spring - Inner (20.1 mm Diameter) - E30 E34 ...
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Genuine BMW - Corporate Logo
T#:6789
Part#: 11341706584
In Stock at Vendor
$ 16.99 USD
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Genuine BMW Valve Spring - D=20,1mm
This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M20


Genuine BMW Valve Spring - E10 E12 E21 E23 E24 E28 E30
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Genuine BMW - Corporate Logo
T#:6786
Part#: 11341276504
In Stock at Vendor
$ 39.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 38.99 USD
Free Shipping on orders $49 and up
$ 38.99 USD
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Genuine BMW Valve Spring - L=44,8/D=32,1mm

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10,M30


KING Performance Rod Bearings - M40/M42/M43/M44
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King - Corporate Logo
T#:4538204
Part#: CR4042XP
In Stock at Vendor
$ 98.99 USD
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$ 98.99 USD
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King Racing’s XP series features pMax Black™, a unique tri-metal structure that is 24% harder than any other conventional tri-metal race bearing. pMax Black™ together with the XP geometric features are the ideal combination for performance racing.
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Glyco Connecting Rod Bushing - E12, E21, E23, E24, E28, E3, E30, E32,...
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Glyco - Corporate Logo
T#:187165
Part#: 11240618100
In Stock at Vendor
$ 12.99 USD
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OEM BMW Connecting Rod Bush

Cylinder Head Bolt - M10 1.8L - Set Of 10 - (NO LONGER AVAILABLE) ...
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Ajusa - Corporate Logo
T#:379589
Part#: 11120621144
Back Ordered
$ 68.99 USD
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$ 68.99 USD
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Timing Chain - E30 E32 E34
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Iwis - Corporate Logo
T#:4468
Part#: 11311716986
In Stock at Vendor
$ 47.18

This product was last offered at the strikethrough price on
01-12-2026

$ 47.17 USD
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$ 47.17 USD
Free Shipping on orders $49 and up
This single row timing chain is used on many BMW's from 1979 on. If you are rebuilding your engine we recommend replacing the timing chain.

IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair, but ultimately improve the way your engine runs.

This item fits the following BMWs:
1979-1983 E21 BMW 320i 323i
1984-1985 E30 BMW 318i
1979-1981 E12 BMW 528i 530i
1985-1988 E28 BMW 533i 535i 535is
1989-1995 E34 BMW 535i
1979-1989 E24 BMW 633csi 635csi
1979-1987 E23 BMW 733i 735i
1988-1993 E32 BMW 735i 735il
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Athena Cut Ring Head Gasket S14
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5150 Autosport - Corporate Logo
T#:28537477
Part#: ATH-HG-CR-S14-95
Ships in 3 Business Days
$ 284.99 USD
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This Athena Cut Ring Head Gasket is specifically engineered to replace BMW part 11121316714 for the S14B20, S14B23, S14B25, S14B27 engines found in the E30 M3. Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena-SCE Cut Ring Head Gaskets are uniquely designed to handle increased cylinder pressure caused by power modifications, making them the recommended choice for applications making 16+ psi. Design: Athena-SCE's gasket body is composed of Motorgasket, a reinforced material developed by Athena's R&D department. This consists of a steel core covered with two layers of asbestos-free aramid fibre and offers excellent thermal and mechanical resistance without compromising its ability to adapt to mating surfaces. To ensure maximum sealing under all conditions, a silicone bead is also applied to critical sealing areas, such as oil and coolant passages. The AISI 304 stainless steel cooper rings bite into the aluminum head, providing maximum sealing around the cylinder bore and optimizing engine performance, even on engines with nitrous and/or turbo applications that exceed 2 bar boost.
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Intake Valve - Priced Each
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Osvat - Corporate Logo
T#:596779
Part#: 11341267721
In Stock at Vendor
$ 13.99

This product was last offered at the strikethrough price on
05-07-2026

$ 8.99 USD
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$ 8.99 USD
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Replacement intake valve 40.0/6.97MM
ARP Head Stud Kit, BMW S14
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ARP - Corporate Logo
T#:28537451
Part#: ARP-HSK-S14
Ships in 3 Business Days
$ 179.99 USD
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This ARP head stud Kit is designed for the BMW S14 B20, S14B23, S14B25, S14B27 engines found in the E30 M3. Installing ARP head studs can provide several benefits, including increased clamping force, improved head gasket sealing, and greater overall engine strength. This is especially important in high-performance and racing applications where the engine is subjected to increased stress and higher temperatures. Before installing ARP head studs, it is important to properly clean and prepare the engine block and cylinder head mating surfaces. It is also recommended to use ARP Ultra-Torque Fastener Assembly Lubricant during installation to ensure proper torque and clamping force. Instructions: 1. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser. 2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper fit, length and dimension. 3. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER. 4. Screw studs into the block “HAND TIGHT ONLY”. 5. Install the cylinder head(s) and check for binding or misalignment. 6. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low quality lubricants are used.
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JE Piston - BMW S14B23 8.5:1 Piston Single 93.60mm
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JE Piston - Corporate Logo
T#:33713149
Part#: 321357S
In Stock at Vendor
$ 251.99 USD
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Key Benefits:

  • 8.5:1 compression ratio for optimal performance in turbocharged or high-boost setups
  • 93.60 mm bore for precise engine fitment and improved displacement
  • 1.260 in. compression height and -23.10 CC volume for efficient combustion
  • Forged construction for enhanced strength and resistance to high temperatures
  • Designed specifically for BMW S14B23 engines, including the E30 M3
  • Available through Turner Motorsport, a trusted source for BMW performance parts
  • Suitable for motorsport and high-performance street applications
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JE Piston - BMW S14B23 13:1 Piston Single 94.00mm
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JE Piston - Corporate Logo
T#:33713146
Part#: 312386S
In Stock at Vendor
$ 251.99 USD
Free Shipping on orders $49 and up

JE Pistons BMW S14B23 Piston - 13:1 Compression – 94.00 mm Bore – 1.260 in. CH, 3.40 CC is designed to elevate the performance of BMW S14 engines, delivering maximum power, reliability, and precision. These high-performance pistons are engineered specifically for motorsport enthusiasts and are a perfect fit for the iconic BMW E30 M3, providing a significant boost in horsepower and torque.

Available through Turner Motorsport, these JE Pistons feature a 13:1 compression ratio and a 94.00 mm bore, optimizing combustion efficiency for enhanced throttle response. Built from forged materials, they are designed to withstand extreme conditions, ensuring durability and long-lasting performance under high stress on the street or track.

Key Benefits:

  • 13:1 compression ratio for superior engine performance and power
  • 94.00 mm bore for optimized engine displacement and precision fitment
  • 1.260 in. compression height and 3.40 CC volume for enhanced combustion
  • Forged construction for maximum strength and durability
  • Specifically engineered for BMW S14B23 engines, including the E30 M3
  • Available through Turner Motorsport, providing trusted quality and expert support
  • Ideal for both street performance and motorsport applications
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JE Piston - BMW S14B23 8.5:1 Piston Single 94.00mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
JE Piston - Corporate Logo
T#:33713155
Part#: 321359S
In Stock at Vendor
$ 251.99 USD
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JE Pistons BMW S14B23 Piston - 8.5:1 Compression – 94.00 mm Bore – 1.260 in. CH, -23.70 CC is expertly engineered for BMW S14 engines, offering a lower compression ratio ideal for turbocharged and high-boost applications. Designed to provide increased power and durability, these high-performance pistons are perfect for enhancing the performance of the BMW E30 M3, delivering consistent results both on the street and track.

Available through Turner Motorsport, these JE Pistons are forged for maximum strength and heat resistance, making them capable of withstanding extreme pressure and high RPMs. With a 94.00 mm bore and -23.70 CC volume, these pistons are precisely crafted to optimize engine displacement and combustion efficiency, allowing for greater throttle response and boosted power output.

Key Benefits:

  • 8.5:1 compression ratio for optimal performance in turbocharged and high-boost applications
  • 94.00 mm bore for increased engine displacement and improved performance
  • 1.260 in. compression height and -23.70 CC volume for efficient combustion
  • Forged construction for maximum strength and durability under extreme conditions
  • Specifically designed for BMW S14B23 engines, including the iconic E30 M3
  • Available through Turner Motorsport, ensuring quality products and expert support
  • Ideal for motorsport and high-performance street applications
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